Portable charging device



FIG 1 is an isometric top view of a portable charging device in accordance with the present invention;

FIG. 2 is an isometric bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a front-side perspective view thereof, shown in an environment of use with a cord and electronic device.

The broken lines shown in the drawings illustrate environmental structure or portions of the portable charging device which form no part of the claimed design. 

CLAIM The ornamental design for a portable charging device, as shown and described. 